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Finding the Fourth Proportional to 328,238.71, 492,358.08 and 103,756.84

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Solution

The fourth proportional to 328,238.71, 492,358.08 and 103,756.84 is: 155,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,238.71 : 492,358.08 = 103,756.84 : x
  2. Step 2: Convert to fraction form
    328,238.71/492,358.08 = 103,756.84/x
  3. Step 3: Cross multiply
    328,238.71x = 492,358.08 × 103,756.84
  4. Step 4: Simplify right side
    328,238.71x = 51,085,518,529.27
  5. Step 5: Solve for x
    x = 51,085,518,529.27/328,238.71
  6. Step 6: Final answer
    x = 155,635.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.